This review is from How to Save a Template in Avery DesignPro® for Mac®:

I have used DesignPro for Mac for years without a problem. I haven't had any problems choosing a template, modifying the template, saving my label or re-opening my project later. I have been through several upgrades with my MacBook Pro without a hitch. I am now using Mountain Lion which is the latest OS and it works great. After choosing a template(there are many) I click on the picture and delete it. Then I can browse to my photos & choose a picture of mine and insert it. Never a problem. Works great.

This review is from How to Save a Template in Avery DesignPro® for Mac®:

Not only does this program change your saved project when you reopen it.. it makes you have to start from scratch when you change from "all same on" to "all same off". It deletes your data. What a waste of time.